Links To other calculators sites

Mechanical Calculators

(Wim Hasselo)

Wim owns a lot of very nice and some very rare calculators. They all come with a description and lots of perfect photo’s, also of the internals of each machine. For some there is a video.

His site also contains detailed information regarding the many different technologies used in mechanical  calculators.

Rechnerlexikon

Contains a large data base of  mechanical calculators. Available in four languages.

Calcuseum.com

Contains a large data base of  vintage electronic calculators.

John Wolff

Contains a lot of information about mechanical as well as electronic calculators.  If you are interested in company history or working principles, don’t, don’t miss this site. If you want to try a repair, look at the Technical and Reference Section. It’s very very helpful.

Vintagecalculators.com

Contains a large data base of  electronic calculators

P.S. :

On this site I use some information which I found elsewhere on the internet. If you are the owner of such info and feel abused or would like to be mentioned please let me know.   

On your request I will remove such info or be glad to mention the source.

Thanks to all those collectors who took care of making so much knowledge and experience available to all of us.

www.rechenkasten.de/BueromaschinenLexikon/

A yearly printed overview of relevant office equipment available in that year in Germany. Most calculators are mentioned with there price.

Ajmdeman.awardspace.info

This site contains HTML-versions of some original documents related to the early history of calculators. It includes many manuals.

Public.beuth-hochschule.de/Hamann/

Contains a large collection of  mechanical calculators. For many calculators it includes a description how to use it.

www.mortati.com/Glusker/

A very interesting site with a lot of information about high-end mechanical calculators. It also contains easy-to-understand drawings regarding common main  working principles.

user.mendelu.cz/marik/mechmat/index-en/

Robert Mařík’s site contains interesting as well as funny stuff regarding mechanical calculators and calculations on  such machines.

GTB4u   (Dutch)


GTB4u on ETSY   (English)


Wepper on ebay.de (German)

A very large collection of ink ribbons and other calculator and typewriter related supplies can be ordered from this web shop.  There is a Dutch webshop, another one in English on Etsy and  there is a presence on German Ebay.  
I ordered ribbons several times and experienced fine communication, fast delivery and a high level of user friendliness  each time.  The actual collection is much larger than shown on these web sites. If you can’t find what you’re looking for or are not sure which product fits your machine, ask for help.

http://www.boelters.de/Rechenmaschinen/

The site “Aus der Rechenmaschinen-Werkstatt von Detlev Bölter” contains lots of information, mostly about  early mechanical calculators.